# -*- coding: utf-8 -*-


# cmap2owl -- Helper application to convert from concept maps to OWL ontologies
# Copyright (c) 2008-2013  Rodrigo Rizzi Starr
#  
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#  
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#  
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


'''
Contains a set of rules to identify different individuals

@author: Rodrigo Rizzi Starr
@copyright: Copyright © 2008-2013 Rodrigo Rizzi Starr
@license: MIT License
@contact: rodrigo.starr@gmail.com
'''


# Project imports
from CMap2Prolog import assemblyQuery, assemblyText
from action import Action
from log import log
log.debug("Loaded...")
           
class ActionProvider:
    "A provider of actions for a given rule class"
    
    def __init__(self, db=None, condition="", message="", action=""):
        self.db = db
        self.condition = condition
        self.message = message
        self.action = action
    
    def getActions(self, element):
        "Returns a list of actions that apply to element"
        
        actions = []
        if self.condition != "" and element != None and element != '':
            query = self.db.query(assemblyQuery(self.condition, element))
            try:
                answer = query.next()
            except StopIteration:
                pass
            else:
                actions.append(Action(self.db,
                                assemblyText(self.message, answer, self.db),
                                assemblyQuery(self.action, answer)))
                
        return actions
          
class UnionOfActionProviders(ActionProvider):
    "Creates a class that is the union of one or more ActionProviders"
    
    def __init__(self, *providers):
        ActionProvider.__init__(self)
        self.providers = providers
        
    def getActions(self, element):
        "Return the info of each provider"
        
        actions = []
        for provider in self.providers:
            actions.extend(provider.getActions(element))
            
        return actions
    
class DummyActionProvider(ActionProvider):
    "Provides no actions"
    
    def __init__(self):
        ActionProvider.__init__(self)
    
    def getActions(self, element):
        "Returns a list of actions that apply to element. In this case, none"
        return []
